<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form id="registrationForm">
 <p> <input type="text" id="username" placeholder="用户名" required></p>
 <p> <input type="email" id="email" placeholder="邮箱" required></p>
 <p> <input type="password" id="password" placeholder="密码" required></p>
  <p><input type="password" id="confirmPassword" placeholder="确认密码" required></p>
  <p><input type="submit" value="注册"></p>
</form>

</body>
</html>